ConstructionChallenge

Electromagnets That Get the Job Done

How the # Number of Wraps effects an electromagnet

# of Wraps Trial 1 Trial 2 Trial 3 Average Observations

16

24

32

Look at an electromagnet at work

http://www.youtube.com/watch?v=6yhNOXQkMpY

Background Information

• A local recycling center wants you to develop an electromagnet that will help them at their recycling plant. Your electromagnet needs to hold at least 50 metal scraps, AKA, washers and place them into the “dump truck”.

Prior Knowledge

• You met with a team of engineers and discussed variable changes for electromagnets. Use any and all ideas to create an electromagnet that will meet the challenge.

Team Preparation• Choose team roles:

– Leader: Make sure each team member contributes ideas; Communicates with the foreman

– Materials Manager: Gets supplies; don’t be afraid to ask for help

– Recorder: Keep track of plan and data; prepare to share with teammates;

– Reporter: Shares findings with classmates

Follow this Design ProcessIdentify Problem

Brainstorm

Design

Build

Redesign Test and Evaluate

Share Solution

Time Management

• You have 3 days to accomplish this task• A Wisdom Walk will be held during the

last 15 minutes of class on Thursday for each team to share their design.

What I Learned From Others:Team Materials used Period 4 Observations # W

1 7 batteries, 150cm red wire, 22 wraps, 4 c bolts

A few/a lot fell off. Dumped washers

39w

2 6 batteries, 80cm black wire, 26 wraps Rubbed with magnet, many fell in lift

17w

3 4 batteries, 3 nails, 50 wraps, 5 feet black wire.

many fell off during lift.

31 w

4 5 batteries, 2 c bolts, 150cm black wire, 27 wraps.

A lot fell off the bolts. Few washers

8 w

5 4 c bolts, 150cm red wire, 8 batteries 5 new energizer, 30 wraps.

Few fell off during lift not many

84w

6 5 batteries, longer bolt, 134cm red wire, 48 wraps

A lot fell off. 35w

What I Learned From Others:

Team Materials used Period 5 Observations # W

1 8 batteries long bolt 145 cm black wire 50 wraps

Couple fell off 34

2 6 batteries 200cm white wire 60 wraps 2 bolts

Problem with lift off

35

3 6 batteries white wire 200cm 53 wraps thick bolt

smooth 63

4 100cm red E wire 60 wraps long bolt 9 batteries

Some fell off good teamwork

15

5 4 batteries 150cm red wire long bolt 34 wraps

Tried many times

1

6 3 batteries 300cm of white wires 81 wraps 1 bolt

54

What I Learned From Others:

Team Materials used Period 3 Observations # W

1 10 batteries, 55 wraps, 80cm black w. Few dropped 64

2 4 batteries, red wire 1yd 18”, 35 wraps Bunch fell off 35

3 10 batteries, 2 red E 80cm wires, 1 bolt had 55w, one had 30w

Disconnected in lift

2

4 50 wraps, 2 batteries, thin red E wire 80cm

Half fell in lift 10

5 10 batteries,2 bolts ,140 cm. black w. 2 dropped 30

6 10 batteries, 1yd black wire, 25 wraps, 2 control bolts

Most fell off in lift

3

What I Learned From Others:Team Materials used Period 8 Observations # W

1 7 batteries 26 wraps 150cm. Control wire

21w

2 4 batteries fat bolt 5 coil wire 32 wraps Control wire

35w

3 3 batteries 2 bolts control wire 30 wraps 35w

4 5 batteries, 80 cm. black wire, 19 wraps, 2 long bolts

1w

5 2 batteries 1 thick bolt 29 wraps control wire

35w

6 5 batteries 2 control bolts 30 wraps 46” white wire

26w

Your

• Each team member will be responsible to summarize their team’s project following criteria sheet

• Report due on Monday, November 17th